Ultra-Dense Networks: Survey of State of the Art and Future Directions
Ultra-Dense Networks: Survey of State of the Art and Future Directions
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DOI：
10.1109/icccn.2016.7568592
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发表时间：
2016-08
期刊：
影响因子：
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通讯作者：
Wei Yu;Hansong Xu;Hanlin Zhang;D. Griffith;N. Golmie
中科院分区：
文献类型：
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作者：
Wei Yu;Hansong Xu;Hanlin Zhang;D. Griffith;N. Golmie
在可预见的未来，移动设备数量的不断增长及其多样性将对当前的网络架构提出挑战。此外，用户将期望未来无线网络具有更高的数据速率、更低的延迟、更低的丢包率等。超密集网络 (UDN) 被认为是满足用户期望和支持未来无线网络部署的最佳方式之一，但将面临多个重大障碍，包括干扰、移动性和成本。在本文中，我们回顾了解决这些挑战的现有研究工作，并提出了未来的研究途径。我们首先开发一个分类法来回顾和描述现有的研究工作。接下来，我们重点关注小区间干扰、切换性能和能源效率，将其作为解决最紧迫挑战的关键技术。最后，我们提出了几个未来的研究方向，包括新兴的物联网（IoT）应用、安全和隐私、建模和现实模拟以及相关技术。
Within the foreseeable future, the growing number of mobile devices, and their diversity, will challenge the current network architecture. Furthermore, users will expect greater data rates, lower latency, lower packet drop rates, etc. in future wireless networks. Ultra Dense Networks (UDN), considered to be one of the best ways to meet user expectations and support future wireless network deployment, will face multiple significant hurdles, including interference, mobility, and cost. In this paper, we review existing research efforts toward addressing those challenges and present future avenues for research. We first develop a taxonomy to review and describe existing research efforts. Next, we focus on inter-cell interference, handover performance, and energy efficiency as the key techniques to addressing the most pressing challenges. Finally, we present several future research directions, including emergent Internet-of-Things (IoT) applications, security and privacy, modeling and realistic simulations, and relevant techniques.